OGC adopts Extension to its Moving Features Standard, enabling JSON Encoding
New Moving Features Extension provides a JSON encoding as an alternative to XML or CSV
2 June 2020: The Open Geospatial Consortium (OGC) is excited to announce that the OGC Membership has approved the Moving Features Encoding Extension - JSON for adoption as an official OGC Standard.
OGC Moving Features Encoding Extension - JSON provides an IETF GeoJSON encoding for OGC Moving Features as an alternative to XML or CSV encodings. A moving feature contains a temporal geometry, whose location continuously changes over time, as well as dynamic non-spatial attributes whose values vary with time. The JSON Encoding Extension supports, 0- (point trajectories), 1- (lines), 2- (polygons), and 3-dimensional (polyhedrons) objects with locations and/or properties that vary over time.
The ability to attribute time-varying properties to an object (rather than just varying its location or trajectory) has utility and value in many current application areas, including: Location Based Services, Intelligent Transportation Systems, Disaster Risk Management Systems, and Smart City Applications. For example, COVID-19 tracking and hotspot modelling, traffic congestion on roads, and hotspots of air pollution are all typical moving features seen in the real world.
The representation of the following phenomena are possible with this Encoding Standard:
- Discrete phenomena, which exist only on a set of instants, such as road accidents;
- Step phenomena, where the changes of locations are abrupt at an instant, such as administrative boundaries;
- Continuous phenomena, whose locations move continuously for a period in time, such as vehicles, typhoons, or floods.
As with any OGC standard, the open OGC Moving Features Encoding Extension - JSON is free to download and implement. Interested parties can view and download the standard from OGC’s Moving Features Standard Page.
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